Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

Brown University - Algae
Catalog #: ABRU00003260
I. Holden s.n. 05 June 1892
Microspora stagnorum (Kützing) Lagerheim
United States, Connecticut, Bridgeport, CT

Yale University Herbarium
Catalog #: YU.091701
Isaac Holden s.n. 05 June 1892
Microspora stagnorum (Kützing) Lagerheim
United States, Connecticut, Fairfield, Bridgeport; Bridgeport, CT

University of Michigan
Catalog #: 730126
Isaac Holden #s.n. 05 June 1892
Microspora stagnorum (Kützing) Lagerheim
United States, Connecticut, Fairfield, Bridgeport

University of Michigan
Catalog #: 730128
Isaac Holden #s.n. 05 June 1892
Microspora stagnorum (Kützing) Lagerheim
United States, Connecticut, Fairfield, Bridgeport

Michigan State University Algae
Catalog #: MSC0183519
Isaac Holden #s.n. 05 June 1892
Microspora stagnorum (Kützing) Lagerheim
United States, Connecticut, Fairfield, Bridgeport

Miami University - Algae
Catalog #: 000187161
Isaac Holden #s.n. 05 June 1892
Microspora stagnorum (Kützing) Lagerheim
United States, Connecticut, Fairfield, Bridgeport